<HTML><HEAD><TITLE>set_range(?Set, -Lwb, -Upb)</TITLE>
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<H1>set_range(?Set, -Lwb, -Upb)</H1>
Lwb and Upb are the current lower and upper bounds on Set
<DL>
<DT><EM>Set</EM></DT>
<DD>A variable or an integer list
</DD>
<DT><EM>Lwb</EM></DT>
<DD>List of integers
</DD>
<DT><EM>Upb</EM></DT>
<DD>List of integers
</DD>
</DL>
<H2>Description</H2>
<P>
    Returns two sorted, duplicate-free lists of integers which represent
    the lower and upper bound of the set variable (or the ground set) Set.
    The predicate can also be used as a test for set-variables, since it
    fails for any other (in particular domain-less) variables.
</P>
<H3>Fail Conditions</H3>
Set is a variable, but not a set variable

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